Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Feb. 28, 2019	May 31, 2018
CURRENT ASSETS
Cash and cash equivalents	$ 2,872	$ 3,265
Receivables, less allowances of $318 and $401	9,037	8,481
Spare parts, supplies and fuel, less allowances of $339 and $268	546	525
Prepaid expenses and other	1,045	1,070
Total current assets	13,500	13,341
PROPERTY AND EQUIPMENT, AT COST	58,164	55,121
Less accumulated depreciation and amortization	28,396	26,967
Net property and equipment	29,768	28,154
OTHER LONG-TERM ASSETS
Goodwill	6,916	6,973
Other assets	4,280	3,862
Total other long-term assets	11,196	10,835
ASSETS	54,464	52,330
CURRENT LIABILITIES
Short-term borrowings	225
Current portion of long-term debt	973	1,342
Accrued salaries and employee benefits	1,659	2,177
Accounts payable	3,156	2,977
Accrued expenses	3,243	3,131
Total current liabilities	9,256	9,627
LONG-TERM DEBT, LESS CURRENT PORTION	17,218	15,243
OTHER LONG-TERM LIABILITIES
Deferred income taxes	3,211	2,867
Pension, postretirement healthcare and other benefit obligations	1,847	2,187
Self-insurance accruals	1,861	1,784
Deferred lease obligations	512	551
Deferred gains, principally related to aircraft transactions	118	121
Other liabilities	547	534
Total other long-term liabilities	8,096	8,044
COMMITMENTS AND CONTINGENCIES
COMMON STOCKHOLDERS' INVESTMENT
Common stock, $0.10 par value; 800 million shares authorized; 318 million shares issued as of February 28, 2019 and May 31, 2018	32	32
Additional paid-in capital	3,209	3,117
Retained earnings	26,650	24,823
Accumulated other comprehensive loss	(737)	(578)
Treasury stock, at cost	(9,260)	(7,978)
Total common stockholders’ investment	19,894	19,416
LIABILITIES AND COMMON STOCKHOLDERS' INVESTMENT	$ 54,464	$ 52,330